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Contents
- The climate of Crater Lake
- The best time to visit Crater Lake
- The worst time to visit Crater Lake
- Spring weather in Crater Lake
- Summer weather in Crater Lake
- Autumn weather in Crater Lake
- Winter weather in Crater Lake
- Weather in January
- Weather in February
- Weather in March
- Weather in April
- Weather in May
- Weather in June
- Weather in July
- Weather in August
- Weather in September
- Weather in October
- Weather in November
- Weather in December
- Frequently asked questions
- Average temperature
- Average rainfall
- Average rainfall days
- Average snowfall
- Average snowfall days
- Average daylight
- Average sunshine
- Average UV index
A beautiful landscape of the Crater Lake in Oregon, viewed from atop the Watchman's Peak
The climate of Crater Lake
The overwhelming presence of Crater Lake, Oregon, USA, is mainly due to its unique climatic conditions. Its Köppen climate classification stands as Csb, indicating a Mediterranean climate with warm summer months. Geographically cradled within the Cascade Mountain range, this area enjoys a compelling mixture of temperatures, rainfall, and sunshine levels throughout the year that significantly contributes to its stunning nature.
With annual temperature highs averaging between 34.4°F (1.3°C) in January to 69.7°F (20.9°C) in August, mid-year warmth balances winter chill well. From the coldest month, January, with its low of 18.4°F (-7.6°C) to the balmy 40.5°F (4.7°C) in July and August, the temperature range caters to various climatic experiences. Rainfall is equally diverse, consuming the range from a low of 1 inch in July and August to a high of 11.6" (295mm) in December.
The area sees an astronomical spike in its snowfall level in the winter, with December's high snowfall of 91.1" (2314mm). The snowfall levels plunge to their shortest extent in July and August with virtually negligible amounts, contributing to the area's distinct seasonal variations. On the other hand, daylight hours keep the area bright, averaging from 9.1 hours in December to a high of 15.3 hours in June. Sunshine levels similarly range from a minimum of 3 hours in December to a maximum of 12 hours in July.
Unique to Crater Lake is its snowfall pattern, with heavy snow accumulating during winter months and virtually no snow in the summer. From zero snowfall days in August to a high of 16.4 days in December, the area sees a remarkable transformation.
With annual temperature highs averaging between 34.4°F (1.3°C) in January to 69.7°F (20.9°C) in August, mid-year warmth balances winter chill well. From the coldest month, January, with its low of 18.4°F (-7.6°C) to the balmy 40.5°F (4.7°C) in July and August, the temperature range caters to various climatic experiences. Rainfall is equally diverse, consuming the range from a low of 1 inch in July and August to a high of 11.6" (295mm) in December.
The area sees an astronomical spike in its snowfall level in the winter, with December's high snowfall of 91.1" (2314mm). The snowfall levels plunge to their shortest extent in July and August with virtually negligible amounts, contributing to the area's distinct seasonal variations. On the other hand, daylight hours keep the area bright, averaging from 9.1 hours in December to a high of 15.3 hours in June. Sunshine levels similarly range from a minimum of 3 hours in December to a maximum of 12 hours in July.
Unique to Crater Lake is its snowfall pattern, with heavy snow accumulating during winter months and virtually no snow in the summer. From zero snowfall days in August to a high of 16.4 days in December, the area sees a remarkable transformation.
The best time to visit Crater Lake
For those planning a visit to Crater Lake, Oregon, June through August presents an inviting period. During this span, temperature highs average a comfortable 57.9°F (14.4°C) in June, 68.7°F (20.4°C) in July, and 69.7°F (20.9°C) in August. Concurrently, the lowest level of rainfall is registered from 1 inch in July and August, ensuring fewer disruptions from wet weather. This period also offers the longest span of daylight with 15.3 hours in June, 15 hours in July, and 13.9 hours in August. Additionally, with zero snowfall days and the least number of rainfall days, outdoor activities are typically uninterrupted during this time of year.
The worst time to visit Crater Lake
From December through February, the weather conditions at Crater Lake can be quite brutal and challenging. Winter temperatures can drop as low as 18.4°F (-7.6°C) in January and 17.8°F (-7.9°C) in February, while the highest temperatures remain below freezing point. Snowfall can reach a staggering 91.1" (2314mm) in December, 71.3" (1811mm) in January, and 73.2" (1859mm) in February. In the dense white blanket, daylight hours also drop to the lowest average of 9.1 hours in December. These extreme weather conditions may restrict outdoor activities and hence, this period is unfavorable for tourists.
Spring weather in Crater Lake
The spring season from March through May offers a fascinating blend of climatological experiences at Crater Lake. As winter snow begins to thaw, the temperature highs gradually climb from 37.3°F (2.9°C) in March to 49.2°F (9.6°C) in April and 57.9°F (14.4°C) in May. Correspondingly, temperature lows elevate themselves from 19.4°F (-7°C) in March to a more bearable 33.2°F (0.7°C) in May. Rainfall averages from a high of 7.5" (191mm) in March to a lesser volume of 3.6" (91mm) in May. Sunshine levels follow a similar increasing trend, with averages rising from 7 hours in March to 10 hours in May.
Summer weather in Crater Lake
Summer in Crater Lake is a season of warmth and increased daylight. The temperature highs reach their zenith during this period, with an average of 68.7°F (20.4°C) in July and 69.7°F (20.9°C) in August. Rainfall recedes considerably, averaging just 1 inch in July and August. Simultaneously, daylight extends to 15 hours in July and 13.9 hours in August, maximizing outdoor activities.
Autumn weather in Crater Lake
Autumn is marked by a gradual lowering of temperatures and an increase in rainfall. Temperature highs drop from 63.1°F (17.3°C) in September to 38°F (3.3°C) in November, while the lows decrease from 36.1°F (2.3°C) to 22°F (-5.6°C) in the same period. Rainfall, on the other hand, increases from 2" (51mm) in September to a significant 10.3" (262mm) in November. Despite this, daylight hours still average a respectable 11 hours in September, tapering off to 9.7 hours by November.
Winter weather in Crater Lake
Winter ushers in extreme climatological conditions at Crater Lake. Temperature highs languish in the mid-30s°F, while lows fall to around 18.1°F (-7.7°C) in December. The area is blanketed with heavy snowfall, a sharp increase from 3.3" (84mm) in September to a staggering 91.1" (2314mm) in December. These conditions, coupled with the shortest daylight hours, make outdoor activities challenging during these months.
Weather in January
January continues the trend in having the most quantity of snowfall with 87.4" (2220mm) in Crater Lake, Oregon, making it the month with the highest snow accumulation. The winter chill firmly establishes itself, creating a frosty atmosphere as temperatures remain low. Weather in January »
Weather in February
February's weather in Crater Lake sees a considerable drop in snowfall from the preceding month, marking the onset of the gradual transition from the cold winds of winter to the milder breeze of spring. Daylight begins to increase, hinting towards the extended sunlight hours of the forthcoming months. Weather in February »
Weather in March
In March, Crater Lake weather witnesses a reduction in snowfall to 73.2" (1859mm), signaling the impending end of the winter season. With the daylight hours extending, the thawing of the snow-covered landscapes begins. A hint of spring can be felt in the air, and it brings along an anticipation of warmer and longer days. Weather in March »
Weather in April
The weather in Crater Lake in April exhibits a marked decrease in snowfall, symbolizing the end of the winter season with a drop to 46.7" (1186mm). The increased daylight hours and warming temperatures usher in the blooming spring season. Weather in April »
Weather in May
May brings a significant change in Crater Lake's weather with a substantial reduction in snowfall, reaching as low as 15.9" (404mm). The warmer temperatures of spring firmly take root, melting away the remnants of the winter snow. Days get longer, blessing the place with plenty of sunshine that illuminates the vibrant greenery. Weather in May »
Weather in June
June in Crater Lake exhibits a further decrease in snowfall, down to a mere 4.1" (104mm), indicating the imminent arrival of the warm summer months. As daylight peaks, the well-lit landscapes beautifully capture the charm of the summer season. Weather in June »
Weather in July
July elucidates a nearly total halt in snowfall in Crater Lake, with a mere 0.1" (3mm) recorded, a typical characteristic of peak summer months. Temperatures further elevate, lending a warm ambiance to the surrounding. The abundant sunshine and the extended daylight make July one of the brightest months. Weather in July »
Weather in August
Although August experiences no snowfall, Crater Lake's weather remains pleasantly warm, synonymous with the latter part of the summer season. Despite the rising temperatures, the atmosphere around the lake continues to echo the calmness of the summer's peak. Weather in August »
Weather in September
September marks the onset of the fall season in Crater Lake with a slight 3.3" (84mm) of snowfall recorded. The weather starts to transition, with the temperature beginning to drop from the summer highs. Daylight hours reduce, indicating the approaching winter months. Weather in September »
Weather in October
In October, snowfall rises again to 18.3" (465mm) in Crater Lake, earnestly hinting at the swiftly approaching winter season. Temperatures continue to fall, leading to crisper, cooler days and chillier nights. The daylight recedes steadily, foretelling the shorter days of the imminent winter. Weather in October »
Weather in November
A marked escalation in snowfall to 71.1" (1806mm) in November in Crater Lake ushers in the early phases of the winter season. The chill in the air intensifies, and one can witness the transition from autumn to winter. Rainfall increases, adding to the chilly weather and often leading to the formation of ice glazes. Weather in November »
Weather in December
December solidifies the onset of the winter season in Crater Lake with a further increase in snowfall to 91.1" (2314mm). Temperatures plummet, bringing the crisp, cold winter air. The short daylight hours and long, chilly nights define the month. Weather in December »
Updated: Jun 4, 2024
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
How much does it rain?
Throughout the year, there are 145.9 rainfall days, and 66.22" (1682mm) of precipitation is accumulated.
When does it snow?
Months with snowfall in Crater Lake are January through July, September through December.
How many days does it snow?
Throughout the year, there are 101.3 snowfall days, and 482.48" (12255mm) of snow is accumulated.
When is Daylight Saving Time (DST)?
On Sunday, March 10. 2024, at 2:00 am, Daylight Saving Time starts, and the time zone changes from PST to PDT. Daylight Saving Time ends Sunday, November 3. 2024, at 2:00 am, and the time zone reverts from PDT to PST.
When are the longest days in Crater Lake?
June has the longest days of the year, with an average of 15h and 18min of daylight.
What are the months with the highest UV index?
The months with the highest UV index are June and July, with an average maximum UV index of 9.
What month has the most sunshine?
July has the most sunshine of the year, with an average of 12h of sunshine.
What is the hottest time of year?
In Crater Lake, the peak average temperatures are observed in August, with a high of 69.6°F (20.9°C) and a low of 40.5°F (4.7°C).
What is the driest month?
The month with the least rainfall in Crater Lake is August, when the rain falls for 4 days and typically collects 0.98" (25mm) of precipitation.
When it does not snow?
The only month without snowfall is August.
What is the month with the least sunshine?
November and December, with an average of 3h of sunshine, are months with the least sunshine.
What is the coldest time of year?
Crater Lake's temperature records reveal December as the coldest month, marked by average highs of 33.6°F (0.9°C) and lows of 18.1°F (-7.7°C).
What is the wettest month?
December is the month with the most rainfall. Rain falls for 18.1 days and accumulates 11.57" (294mm) of precipitation.
When does it snow the most?
The month with the most snowfall is December, when snow falls for 16.4 days and typically aggregates up to 91.1" (2314mm) of snow.
What is the month with the shortest days in Crater Lake?
The month with the shortest days is December, with an average of 9h and 6min of daylight.
What is the month with the lowest UV index?
The month with the lowest UV index is December, with an average maximum UV index of 1.
Average temperature
Crater Lake, OR
The warmest month (with the highest average high temperature) is August (69.7°F).
The month with the lowest average high temperature is December (33.6°F).
The months with the highest average low temperature are July and August (40.5°F).
The coldest month (with the lowest average low temperature) is February (17.8°F).
Average rainfall
Crater Lake, OR
The wettest month (with the highest rainfall) is December (11.6").
The driest months (with the least rainfall) are July and August (1").
Average rainfall days
Crater Lake, OR
- Average rainfall days in January:
18 days - Average rainfall days in February:
15.9 days - Average rainfall days in March:
18.2 days - Average rainfall days in April:
15.5 days - Average rainfall days in May:
11.2 days - Average rainfall days in June:
8 days
- Average rainfall days in July:
3.9 days - Average rainfall days in August:
4 days - Average rainfall days in September:
5.8 days - Average rainfall days in October:
9.8 days - Average rainfall days in November:
17.5 days - Average rainfall days in December:
18.1 days
The month with the highest number of rainy days is March (18.2 days).
The month with the least rainy days is July (3.9 days).
Average snowfall
Crater Lake, OR
- Average snowfall in January:
87.4" - Average snowfall in February:
71.3" - Average snowfall in March:
73.2" - Average snowfall in April:
46.7" - Average snowfall in May:
15.9" - Average snowfall in June:
4.1"
The month with the highest snowfall is December (91.1").
The month with the least snowfall is August (0").
Average snowfall days
Crater Lake, OR
- Average snowfall days in January:
15.9 days - Average snowfall days in February:
14.3 days - Average snowfall days in March:
15.6 days - Average snowfall days in April:
12.2 days - Average snowfall days in May:
5.9 days - Average snowfall days in June:
2 days
- Average snowfall days in July:
0.1 days - Average snowfall days in August:
0 days - Average snowfall days in September:
1 days - Average snowfall days in October:
4.7 days - Average snowfall days in November:
13.2 days - Average snowfall days in December:
16.4 days
The month with the highest number of snowfall days is December (16.4 days).
The month with the least snowfall days is August (0 days).
Average daylight / Average sunshine
Crater Lake, OR
- Average daylight in January:
9h and 3min - Average daylight in February:
10h and 4min - Average daylight in March:
12h and 0min - Average daylight in April:
13h and 2min - Average daylight in May:
14h and 4min - Average daylight in June:
15h and 2min
- Average daylight in July:
15h and 0min - Average daylight in August:
13h and 5min - Average daylight in September:
12h and 3min - Average daylight in October:
11h and 0min - Average daylight in November:
9h and 4min - Average daylight in December:
9h and 1min
The month with the longest days is June (Average daylight: 15h and 18min).
The month with the shortest days is December (Average daylight: 9h and 6min).
The month with the most sunshine is July (Average sunshine: 12h).
The months with the least sunshine are November and December (Average sunshine: 3h).
Average UV index
Crater Lake, OR
The months with the highest UV index are June and July (UV index 9).
The month with the lowest UV index is December (UV index 1).
Crater Lake, Oregon, USA
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